Design and Implementation of an Isolated Bidirectional Phase-Shift Full-Bridge Converter With High Transformation Ratio

Wu, Sen‐Tung; Yang, Bo-Yu

doi:10.1109/access.2023.3246261

Cited by 9 publications

(4 citation statements)

References 24 publications

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“…Thereafter, a resonant is established among the L m and C P of the lagging-legs switches, S P3 and S P4 . Lastly, I PR t ð Þ and the drain-to-source volt of lagging-legs switches, V ds,SP3 t ð Þ, and V ds,SP4 t ð Þ are observed in Equations (29), (30), and (31). Once the filtering elements L Rf and C Rf have been put in place, the current will flow steadily through the given load of R load and C load .…”

Section: Circuit Analysismentioning

confidence: 99%

Efficiency and dynamic characteristics of improved dual‐stage power converter setup with advanced model predictive controller for electric vehicle battery charging

Kalirajan

Iruthayarajan

Kamaraja

2023

Circuit Theory & Apps

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SummaryThis paper proposes an advanced power converter setup to charge an electric vehicle battery from a renewable energy source, such as solar photovoltaic. An improved Z‐source DC–DC boost converter (IZSBC) is utilized in the first stage. A synchronous rectifier (SR) of a phase‐shifted full‐bridge converter (PSFBC) with continuous conduction mode (CCM) is employed in the second stage using the zero voltage switching (ZVS) technique to provide isolation between the source and the load. To address the disadvantage of undesirable dynamic characteristics of the PSFBC‐SR, an advanced voltage control using the advanced model predictive controller (AMPC) is suggested to improve the dynamic characteristic of the PSFBC‐SR converter and prevent output voltage overshoot. An AMPC‐based new control method is preferred to eliminate body‐diode conduction for improved efficiency at any load conditions. Simulation and experimental designs of 0.5 kW with a 25 V DC input from the SPV, a boosted output of 100 V for a 60 V, 16 Ah battery bank and switching frequencies of 100 and 250 kHz for IZSBC and PSFBC‐SR, respectively, are produced and evaluated. Results show an efficiency of 93.7% with 31.44 W loss in simulations and 93.94% with 30.25 W loss in hardware tests. The preferred system has fast dynamics and is robust to sudden load impedance changes, thereby improving current tracking and reducing converter losses. The AMPC strategy proposed in this paper can increase conversion efficiency and control the output voltage without additional gain tuning.

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Section: Circuit Analysismentioning

confidence: 99%

Efficiency and dynamic characteristics of improved dual‐stage power converter setup with advanced model predictive controller for electric vehicle battery charging

Kalirajan

Iruthayarajan

Kamaraja

2023

Circuit Theory & Apps

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“…This might increase the cost of the charging station and increase the complexity of operation [4]. The bidirectional dual active bridge (DAB) enables charging options, such as Grid-to-Vehicle (G2V) and Vehicle-to-Grid (V2G), where the voltage conversion in this charging can be obtained using phase-shift modulation [5]. The Z-source inverter is more suitable for PVgrid-tied integration.…”

Section: Introductionmentioning

confidence: 99%

A Photovoltaic-Powered Modified Multiport Converter for an EV Charger with Bidirectional and Grid Connected Capability Assist PV2V, G2V, and V2G

Gopalasami,

Chokkalingam

2024

WEVJ

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To reduce the burden of electric vehicle (EV) charging power requirements, photovoltaic (PV) infrastructure EV charging has grown in recent years. The Z-Source Inverter (ZSI) allows tapping the boosted DC and AC by adjusting the switching shoot-through. However, it has only one DC tapping, thus limiting multiport charging options. This can be overcome by splitting the boosting capacitors used at the load terminal, which supports multiple charging ports, enabling simultaneous charging of multiple EVs, thereby increasing capacity and improving overall system efficiency. This paper presents a novel PV-tied Adaptable Z-Source Inverter (AZSI) for multiport EV charging. The modified split capacitor Z-source impedance networks ensure power availability at the charging station by regulating PV generation and grid supply. The performance of the AZSI was evaluated with experimentations that achieved an efficiency of 93.8% with three charging ports. This work contributes to developing sustainable and efficient charging infrastructure to meet the growing demands of the electric vehicle market.

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“…As a result of this galvanic isolation, the required protection in renewable energy sources is reduced, and the need for high-voltage switches is eliminated. Therefore, the isolated power electronic DC-DC converters have been widely chosen for high power applications, such as phase-shift full-bridge converters [9]- [11], LCC series-parallel resonant converters [12], [13], bridge converter of single active type [14], [15] and three phase dual active bridge DC-DC converter [16]. The aforementioned converters are constructed by the fullbridge structure for high-power applications.…”

Section: Introductionmentioning

confidence: 99%

“…They reduce the power and switching losses in order to achieve a high gain. The first technique is the ZVS [11], [17], [18]. The second technique is ZVZCS [19], [20].…”

Section: Introductionmentioning

confidence: 99%

A ZVZCS Full-Bridge Converter Suitable for Renewable Energy-Based MVDC Collection System

Waqar Azeem,

Ehab,

Wang

et al. 2024

IEEE Access

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A zero-voltage zero-current-switching (ZVZCS) full-bridge DC-DC converter, based on a dual transformer with two output filter capacitors, is proposed in this paper. The proposed topology is suitable for application in renewable energy at medium voltage, integrated with a DC collection system. To realize voltage and power regulation for the converter, pulse width modulation (PWM) is employed with a fixed duty cycle for the main switches. Through careful design of the turns ratio of the main transformer, most of the power under full load range is delivered by the main full-bridge circuit, which also achieves zero-voltage switching (ZVS). This significantly reduces the switching losses. A small portion of the total power is delivered by the auxiliary circuit that realizes ZVZCS. Therefore, the turns ratio of the auxiliary transformer can be optimized such that the efficiency of the proposed converter can be improved. The optimzation is discussed in detail, along with the design parameters of the proposed converter. A prototype of 200V-2kV/3kW has been developed to verify the simulation results and validate the working of the proposed scheme.

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Design and Implementation of an Isolated Bidirectional Phase-Shift Full-Bridge Converter With High Transformation Ratio

Cited by 9 publications

References 24 publications

Efficiency and dynamic characteristics of improved dual‐stage power converter setup with advanced model predictive controller for electric vehicle battery charging

Efficiency and dynamic characteristics of improved dual‐stage power converter setup with advanced model predictive controller for electric vehicle battery charging

A Photovoltaic-Powered Modified Multiport Converter for an EV Charger with Bidirectional and Grid Connected Capability Assist PV2V, G2V, and V2G

A ZVZCS Full-Bridge Converter Suitable for Renewable Energy-Based MVDC Collection System

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